Adjustable steel box hoist positioner

Abstract

The utility model provides a kind of adjustable steel hanging box positioner, including the first connecting section bar being opened with waist hole, the second connecting section bar being opened with waist hole, connecting bolt and detachable connecting piece;First connecting section bar is connected with steel hanging box inner wall board, second connecting section bar is connected with detachable connecting piece, the waist hole of second connecting section bar is aligned with the waist hole of first connecting section bar, connecting bolt is inserted into corresponding waist hole, second connecting section bar is connected with first connecting section bar, connecting bolt can be loosened during the process of steel hanging box hoisting, so that second connecting section bar can adjust position relative to first connecting section bar;The circumference enclosed by the inside of detachable connecting piece cooperates with steel casing to position and guide steel hanging box.The utility model realizes the positioning of steel hanging box and adjusts position according to actual engineering demand, effectively avoids the interference of positioner itself deformation to steel hanging box hoisting, and has the characteristics such as simple installation, simple operation, in addition, positioner can be reused.

Description

Technical Field

[0001] This utility model relates to the field of bridge deep-water foundation construction technology, and in particular to an adjustable steel caisson positioner. Background Technology

[0002] In recent years, large-scale projects such as long-span bridges have emerged, giving rise to numerous new construction methods. In the construction of long-span bridges, the steel caisson cofferdam method is commonly used for the substructure. However, the steel caisson is extremely heavy, the hoisting process is complex, and adjusting its position after lowering is difficult. To ensure precise positioning of the steel caisson, guide connectors are typically installed between the inner wall of the caisson and the steel casing; precise positioning is achieved by adjusting their dimensions.

[0003] In related technologies, commonly used guide connectors typically have fixed dimensions and are for single use, resulting in relatively high costs. Chinese utility model patent CN210066785U proposes a new guide connector, but its double-spring structure suffers from significant deformation upon impact, potentially affecting positioning accuracy. Furthermore, it requires mounting holes in the steel casing wall, which may pose a leakage risk. Additionally, a single unit consists of multiple independent components, making installation relatively cumbersome and operation complex, indicating room for further improvement. Utility Model Content

[0004] The purpose of this utility model is to provide an adjustable steel caisson positioner to address the shortcomings of the aforementioned background technology, thereby achieving accurate positioning of the steel caisson during the hoisting process, while also being reusable and reducing construction costs.

[0005] To achieve the above objectives, this utility model provides an adjustable steel caisson positioner, which is installed between the inner wall panel of the steel caisson and the steel casing. It includes a first connecting profile with a waist hole, a second connecting profile with a waist hole, connecting bolts, and detachable connecting parts.

[0006] One end of the first connecting profile is connected to the inner wall panel of the steel caisson, and one end of the second connecting profile is connected to the detachable connector. The waist hole of the second connecting profile is aligned with the waist hole of the first connecting profile. The connecting bolt is inserted into the corresponding waist hole to connect the second connecting profile to the first connecting profile. The connecting bolt can be loosened during the hoisting of the steel caisson so that the position of the second connecting profile can be adjusted relative to the first connecting profile.

[0007] Multiple adjustable steel caisson positioners are provided, and the circumference formed by the inner side of the detachable connector cooperates with the steel casing to position and guide the steel caisson.

[0008] Furthermore, the first connecting profile is an H-beam, and the second connecting profile is a channel steel.

[0009] Furthermore, the waist hole is formed on the web of the H-beam and the channel steel.

[0010] Furthermore, the web of the H-beam has two slots on both sides, and each H-beam connects to two channel steels. The channel steels are placed in the corresponding slots and the web is in contact with the web of the H-beam.

[0011] Furthermore, the detachable connector is a detachable arc-shaped plate.

[0012] Furthermore, the outer surface of the detachable arc-shaped plate is provided with a drag-reducing material to reduce friction between the detachable arc-shaped plate and the steel casing.

[0013] Furthermore, the detachable arc-shaped plate is provided with a through hole, and the end of the second connecting profile is provided with a bolt hole, so that the detachable arc-shaped plate and the end of the second connecting profile can be detachably connected by mounting bolts.

[0014] Furthermore, the connecting bolt is a high-strength bolt, and washers are provided at both ends of the connecting bolt.

[0015] Furthermore, a stiffening plate is provided between the first connecting profile and the inner wall panel of the steel caisson, the stiffening plate being used to strengthen the connection between the first connecting profile and the inner wall panel of the steel caisson.

[0016] The above-mentioned solution of this utility model has the following beneficial effects:

[0017] The adjustable steel caisson positioner provided by this utility model, through the setting of the waist hole on the first connecting profile and the second connecting profile, can adjust the relative position of the two during the hoisting process, thereby realizing the positioning of the steel caisson and adjusting the position according to the actual project needs. It effectively avoids the interference of the positioner's own deformation on the hoisting of the steel caisson. It also has the characteristics of easy installation and simple operation. In addition, it realizes the reuse of the positioner and reduces the construction cost.

[0018] Other beneficial effects of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0019] Figure 1 This is a top view showing the overall structure and installation of this utility model;

[0020] Figure 2 This is a top view of the overall structure of this utility model;

[0021] Figure 3 for Figure 1 AA section view;

[0022] Figure 4 This is a schematic diagram of the connection between the detachable connector and the second connecting profile of the present invention.

[0023] [Explanation of Labels in the Attached Image]

[0024] 1-Inner wall panel of steel caisson; 2-Steel casing; 3-Waist hole; 4-First connecting profile; 5-Second connecting profile; 6-Connecting bolt; 7-Detachable connector; 8-Gasket; 9-Reinforcing plate; 10-Perforation. Detailed Implementation

[0025] To make the technical problems, solutions, and advantages of this utility model clearer, a detailed description will be provided below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a locking connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] like Figures 1-3As shown, an embodiment of this utility model provides an adjustable steel caisson positioner, disposed between the inner wall panel 1 and the steel casing 2 of the steel caisson. It includes a first connecting profile 4 with a waist hole 3, a second connecting profile 5 with a waist hole 3, connecting bolts 6, and a detachable connector 7. One end of the first connecting profile 4 is welded to the inner wall panel 1 of the steel caisson, and one end of the second connecting profile 5 is welded to the detachable connector 7. The connecting bolts 6 are used to pass through the corresponding waist holes 3 to fix the second connecting profile 5 to the first connecting profile 4.

[0029] Therefore, in this embodiment, multiple detachable connectors 7 between the inner wall panel 1 of the steel caisson and the steel casing 2 are used to position the steel caisson by cooperating with the inner circumference of the detachable connectors 7 with the steel casing 2, so that the steel caisson and the steel casing 2 maintain a preset coaxiality, and at the same time guide the steel caisson to ensure the accuracy and reliability of the steel caisson hoisting.

[0030] In one specific embodiment of this example, the first connecting profile 4 is an H-beam, and the second connecting profile 5 is a channel steel. Waist holes 3 are formed on the web of both the H-beam and the channel steel, for example, in a 2×2 arrangement as shown in the figure. The waist holes 3 of the channel steel and the H-beam are arranged in a one-to-one correspondence to facilitate a secure connection between the channel steel and the H-beam using connecting bolts 6. It is understood that, considering the specific shape of the H-beam, it has two slots on both sides. The channel steel is placed in the slots, and its web fits against the web of the H-beam, thus aligning the waist holes 3. The use of waist holes 3 facilitates the insertion of the connecting bolts 6, avoids misalignment of the waist holes 3 due to manufacturing errors, and allows the connecting bolts 6 to be slightly loosened during hoisting, thereby providing adjustment space along the long axis of the waist holes 3.

[0031] In a preferred embodiment, for an H-beam, a pair of channel steels are provided, each located in one of the two slots of the H-beam. Therefore, a single connecting bolt 6 will simultaneously pass through the waist hole 3 in the middle of the H-beam and the waist holes 3 in both channel steels on either side, forming a secure connection. The ends of both channel steels are simultaneously welded to a detachable connector 7 to enhance the connection strength of the detachable connector 7. In this embodiment, the detachable connector 7 is a detachable curved plate; therefore, one end of the channel steel needs to be shaped to match the detachable curved plate. In one specific embodiment, simultaneously as... Figure 4As shown, the detachable arc-shaped plate and the end of the channel steel are detachably connected via through holes 10 on the detachable arc-shaped plate, bolt holes on the channel steel, and mounting bolts. It is preferable that the through holes 10 also have an oblong shape so that the detachable arc-shaped plate can be adjusted in installation position and can be detached and retracted. Furthermore, the inner surface of the detachable arc-shaped plate can be further coated with friction-reducing material, such as a smoother PTFE sheet, to reduce friction between the detachable arc-shaped plate and the steel casing 2 during the hoisting of the steel caisson, thus minimizing the impact on the hoisting process.

[0032] As a preferred embodiment, the connecting bolt 6 in this embodiment is a high-strength bolt, and washers 8 are further provided at both ends of the connecting bolt 6 to increase the contact area and avoid excessive locking force on the channel steel, which would damage the surface structure. This also facilitates disassembly and reuse.

[0033] Due to the large size and weight of the steel caisson, in order to further improve the connection between the locator and the inner wall panel 1 of the steel caisson and ensure that it can guide the steel caisson smoothly, in this embodiment, a stiffening plate 9 is further provided between the H-beam and the inner wall panel 1 of the steel caisson. The plate is triangular in shape and is used to further strengthen the connection between the H-beam and the inner wall panel 1 of the steel caisson to avoid stress concentration.

[0034] As described above, the adjustable steel caisson positioner provided in this embodiment, through the setting of the waist hole 3 on the first connecting profile 4 and the second connecting profile 5, can adjust the relative position of the two during the hoisting process, thereby realizing the positioning of the steel caisson and adjusting the position according to the actual engineering needs. It effectively avoids the interference of the positioner's own deformation on the hoisting of the steel caisson. It also has the characteristics of easy installation and simple operation. In addition, it realizes the reuse of the positioner and reduces the construction cost.

[0035] The adjustable steel caisson positioner provided in this embodiment is implemented in the following steps:

[0036] Step 1: Positioner preparation.

[0037] The H-beams are made of Q345B steel, with 3 waist holes in the web (the long axis of the waist holes 3 is parallel to the flange), and the position tolerance of the waist holes 3 is ±0.5mm; the channel steel is made of Q345B steel, with 3 waist holes in the web, and the hole positions are aligned with the H-beams; the detachable curved plates are made of Q235B steel; the stiffening plates 9 are made of 12mm thick Q235B steel plates, with dimensions of 200×150mm and rounded edges of R5; the high-strength bolts are 10.9 grade M24×80 bolts, matched with 12mm thick Q235B flat washers, and the surface is treated with Dacromet.

[0038] Step 2: On-site installation.

[0039] Before installation, the installation position of the locator is calibrated, and the inner wall panel 1 of the steel caisson is derusted to ensure the safety of the overall positioning structure. One end of the H-beam is welded to the inner wall panel 1 of the steel caisson by welding. All welds are continuous fillet welds with a weld leg size of 8mm to ensure the welding effect. Stiffening plates 9 are symmetrically installed on both sides of the web of the H-beam, and the position of the stiffening plates 9 is aligned with the position of the web of the H-beam. Double-sided fillet welds are used for welding. The channel steel is hoisted to both sides of the H-beam. The upper and lower channel steels are aligned with the web of the H-beam and the waist holes 3 are aligned. After the waist holes 3 are aligned, high-strength bolts are inserted and initially tightened for fixation. The detachable arc plate is connected to one end of the channel steel and the installation bolts are tightened. During the installation process, the detachable arc plate is kept vertical and the deviation should not be too large.

[0040] Step 3: Positioning adjustment.

[0041] Based on the designed spacing between the steel caissons, the welded channel steel, detachable arc plate, and steel casing assembly are lifted as a whole by a crane. The high-strength bolts connecting the channel steel and H-beam are loosened, and the position of the locator is adjusted. After the position is fixed, the high-strength bolts are tightened to secure it.

[0042] Step 4: Lowering the steel caisson and dismantling the device after it has been lowered into place.

[0043] After the steel caisson is lowered to the designated position, the locator is removed, the high-strength bolts are loosened, and the combination of the channel steel and the detachable arc plate is separated from the H-beam. The detachable arc plate is removed from the channel steel. The H-beam and stiffening plate 9 are cut using plasma cutting to ensure a smooth and flat cut with minimal deformation and no significant impact on the performance of the inner wall panel 1 of the steel caisson. The disassembled components will be stored uniformly for use in the next construction.

[0044] Before the next use, each component should be inspected, including: checking the wear of the waist hole 3 (allowable wear ≤0.3mm); checking the straightness of H-beams, channel steel, etc. (overall deviation ≤1mm); and checking for damage to high-strength bolts, in order to improve the safety of the project.

[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. An adjustable steel caisson positioner, disposed between the inner wall panel of the steel caisson and the steel casing, characterized in that, Includes a first connecting profile with a waist hole, a second connecting profile with a waist hole, connecting bolts, and detachable connectors; One end of the first connecting profile is connected to the inner wall panel of the steel caisson, and one end of the second connecting profile is connected to the detachable connector. The waist hole of the second connecting profile is aligned with the waist hole of the first connecting profile. The connecting bolt is inserted into the corresponding waist hole to connect the second connecting profile to the first connecting profile. The connecting bolt can be loosened during the hoisting of the steel caisson so that the position of the second connecting profile can be adjusted relative to the first connecting profile. Multiple adjustable steel caisson positioners are provided, and the circumference formed by the inner side of the detachable connector cooperates with the steel casing to position and guide the steel caisson.

2. The adjustable steel caisson positioner according to claim 1, characterized in that, The first connecting profile is an H-beam, and the second connecting profile is a channel steel.

3. The adjustable steel caisson positioner according to claim 2, characterized in that, The waist hole is formed on the web of the H-beam and the channel steel.

4. The adjustable steel caisson positioner according to claim 2, characterized in that, The H-beam has two slots on both sides of its web. Each H-beam is connected to two channel steels. The channel steels are placed in the corresponding slots and the web is in contact with the web of the H-beam.

5. The adjustable steel caisson positioner according to claim 1, characterized in that, The detachable connector is a detachable arc-shaped plate.

6. The adjustable steel caisson positioner according to claim 5, characterized in that, The outer surface of the detachable arc-shaped plate is provided with a drag-reducing material to reduce friction between the detachable arc-shaped plate and the steel casing.

7. An adjustable steel caisson positioner according to claim 5, characterized in that, The detachable arc-shaped plate is provided with a through hole, and the end of the second connecting profile is provided with a bolt hole. The detachable arc-shaped plate and the end of the second connecting profile are detachably connected by mounting bolts.

8. An adjustable steel caisson positioner according to claim 1, characterized in that, The connecting bolt is a high-strength bolt, and washers are provided at both ends of the connecting bolt.

9. An adjustable steel caisson positioner according to claim 1, characterized in that, A stiffening plate is also provided between the first connecting profile and the inner wall panel of the steel caisson, and the stiffening plate is used to strengthen the connection between the first connecting profile and the inner wall panel of the steel caisson.

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